etruria

As a proper noun etruria

is (label) (ancient country).

As an adjective etrurian is

of or pertaining to ancient etruria.

As a noun etrurian is

a native or inhabitant of ancient etruria.

As proper nouns the difference between etruria and faliscan

is that etruria is (label) (ancient country) while faliscan is (uncountable) the language (related to latin) of these people.

As a noun faliscan is

(countable) a member of an ancient italic people who lived in southern etruria.